<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <script src="../js/vue-2.6.12.js"></script>
</head>
<body>

  <div id="app">
    <h1>{{msg}}</h1>
  </div>

  <script type="text/javascript">
    const vm = new Vue({
      el:"#app",
      data:{
        msg:"zhangsan"
      }
    });
  </script>
</body>
</html>